Faller bars for textile combing machines and other comb-like members



'- 0t.3',1967 M K. MANN ETAL 3,344,482

FALLER BARS iOR TEXTILE COMBING MACHINES AND OTHER COMB-LIKE MEMBERS Filed June 29, 1965 2 Sheets-Sheet 1 Ot .3,1967 K. MANN ETAL M. 3,344,482 FALLER BARS FOR TEXTILE COMBING MACHINES AND OTHER COMB-LIKE MEMBERS 2 Sheets-Sheet 2 Filed Jun e 29, 1965 INVENTOR mmsw kEflNETH Inn/(M man/mu RusHwan-ru United States Patent 3,344,482 FALLER BARS FOR TEXTILE COMBING MA- CHINES AND OTHER COMB-LIKE MEMBERS Matthew Kenneth Mann, vShipley, and Norman Rushworth, Baildon, England, assignors to Plastex Limited, Dublin, Ireland, a corporation of Ireland Filed June 29, 1965, Ser. No. 467,902 Claims priority, application Great Britain, July 1, 1964, 27,073/64; Mar. 17, 1965, 11,215/ 65 9 Claims. (Cl. 19129) ABSTRACT OF THE DISCLOSURE A taller bar for textile machinery comprises a molded body of synthetic resin having the butt ends of a series of pins imbedded therein, and there being a longitudinal resilient metal reenforcing element permanently imbedded within the body to extend between the end mounting sections of the bar adjacent the pin butt ends.

A taller bar for a textile combing machine, for example a gill box, comprises a metal bar having its end portions adapted for engagement with traversing mechanism, the intermediate portion of the metal taller bar having a series of pins projecting, in comb-like fashion, from one edge of the bar, for operating on fibres to be combed. The conventional method of securing the pins to a taller bar comprises forming a series of holes in one edge of the metal taller bar and securing a pin in each hole. It has also been proposed to provide a pin strip unit comprising a strip of synthetic resin in which the butt ends of a series of pins are embedded, the pin strip unit being adapted to be secured in a longitudinally disposed groove in the taller bar.

According to the present invention, a taller bar or other comb-like member is formed by molding the taller bar or the like around the butt ends of a series of pins. The pins will therefore be permanently secured to the taller bar or the like so that When the pins become worn or broken, the entire taller bar will be discarded and then be replaced by a fresh taller bar, instead of extracting and replacing individual pins or pin strip units as would be done with conventional or previously proposed metal taller bars. By molding the taller bar from synthetic resinous material, a replacement taller bar may cost no more than the cost of removing worn pins or pin strip units and replacing them by new pins or pin strip units, and could possibly involve even less expense than such renewal of pins or pin strip units. The pins may be held in a jig whilst the taller bar is being moulded around the butt ends of the pins.

The taller bar may be formed in a mold of any con venient construction, the internal cavity of the mold being formed according to the shape and size of the particular taller bar being produced. The mold may have an opening along the side or edge where the pins are to project from the taller bar, and a jig carrying the series of pins held therein in parallel closely spaced disposition with the butt ends of the pins only projecting from the jig, may be disposed over the said opening in the mold with the butt ends of the pins projecting into the cavity of the mold. The jig therefore serves to close the mold, and the butt ends of the pins will be embedded in the material of the taller bar when the molding material is injected or otherwise inserted into the mold.

The butt ends of the pins may be formed so as to key into the material molded around them, for example they may have heads, or be flattened or they maybe bent or otherwise formed to resist withdrawal of the pins after the material of the taller bar has set.

3,344,482 Patented Oct. 3, 1967 The taller bar may have a metal insert or reinforcement, and such metal insert or reinforcement may extend throughout most of the length of the taller bar. Preferably the metal insert will be of resilient material, for example spring steel, so that if the taller bar should be bent or flexed due to stresses during use, it will return to its original form when such stresses are released. In the'production of a taller bar with metal inserts or reinforcement, the metal insert may be placed in the mold so that the taller bar will be molded around the metal insert as well as around the butt ends of the pins.

A taller bar constructed according to the invention together with modifications and a method of making the taller bar will now be described, by way of example only, with reference to the accompanying drawings, in which:

FIGURE 1 is a side elevation of the taller bar,

FIGURE 2 is an end elevation of the taller bar of FIG- URE 1,

FIGURE 3 is a side elevation, partly in section, of one end portion of the taller bar of FIGURE 1, drawn to a larger scale,

FIGURE 4 is a view similar to FIGURE 3, but showing a modification,

FIGURE 5 is a cross-section on the line V-V of FIGURE 4,

FIGURE 6 is a plan view, partly in section, of the end portion of the taller bar shown in FIGURE 5,

FIGURE 7 is a cross-section through a taller bar showing a modification,

FIGURE 8 is a detail sectional view of part of a taller bar showing a further modification, and

FIGURE 9 is a diagrammatic exploded perspective view of part of a mold, and a jig carrying metal pins and also a metal insert, for use in the manufacture of the taller bar.

Referring to the drawings, the simplest form of taller bar accord-ing to the invention is illustrated in FIGURES ,1, 2 and 3. In these figures the taller bar body 10, which is of conventional size and shape, is molded around the butt ends of the pins 11 the main portions of which project from the upper surface of the body 10 as in a conventional taller bar. The body 10 is molded from a synthetic resinous material, a preferred material being glass filled nylon with which graphite is mixed. The glass filled nylon, comprising nylon reinforced with glass fibre, is tough and hard wearing, and the graphite provides a degree of selflubrication tor the taller bar.

In the modification shown in FIGURES 4, 5 and 6, the taller bar body 12 and the pins 13 are similar to the body 10 and pins 11 of FIGURES 1, 2 and 3, but in FIGURES 4, 5 and 6, a metal insert or reinforcement 14 is embedded in the body 12. The metal insert 14 is substantially U-shaped in cross-section and it extends throughout most of the length of the body 12. The insert 14 is dis- I posed with its open side uppermost and the butt ends of the pins 13 are disposed between the two side walls of the insert but are not directly connected or attached to the insert 14. The end portions 15 of the insert 14 are flattened as shown in FIGURE 6, beyond the row of pins 13 so that these end portions 15 can extend into the narrower end portions of the body 12.

The modification shownin FIGURE 7 is similar to the arrangement of FIGURES 4, 5 and 6, in that a U-section insert 14 is embedded in the body 12 together with the butt ends of the pins 13, but the butt ends of the pins 13 shown in FIGURE 8, in Which the pins 17 have heads 18 3 on their butt ends embedded in the material of the faller bar body 19.

The method of manufacture of a faller bar according to the invention is illustrated in FIGURE 9. A mold 20 has a cavity 21 formed according to the shape and size of the particular faller bar to be produced. The cavity 21 is open at 22' along one side where the pins are to project from the faller bar, and a jig 22 comprising a bar has a series of holes 23 to receive a corresponding series of pins 24 therein, in parallel closely spaced disposition, with the butt ends 25 of the pins projecting from the inner side of the jig 22. The jig is intended to be placed over the open side 22' of the mold with the butt ends 25 of the pins 24 projecting into the cavity 21. In this particular example, a U-section metal insert or reinforcing strip 26 is also disposed within the cavity with the butt ends 25 of the pins disposed between the side walls of the insert 26, but it will be understood that the insert 26 may be omitted, for example when producing a faller bar as in FIGURES 1, 2 and 3. The jig 22 serves to close the open slide 22' of the mold cavity 21, and when the molding material is introduced into the mold, the butt ends 25, and the insert 26 if present, will be embedded in the material of the faller bar when the molding material sets. The insert 26 can be supported in the cavity 21 in any convenient or conventional manner. For example, the mold 20 may be used inverted, as compared with FIGURE 9, and the insert 26 placed over the butt ends 25 which will be projecting upwardly from the jig 22 which would also be inverted. The insert 26 will then be supported within the cavity 21 by the butt ends of the pins when the jig is fitted over the open side of the mold.

Any convenient moldable syntheic resinous material may be used for the faller bars. One such material is nylon reinforced with glass fibre which material is known as glass filled nylon, and, if desired, graphite may be incorporated to provide self-lubrication. However other material such as hard grades of polythene may be used. Advantages arising from the use of such materials for faller bars are reduction in noise when operating in a combing or like machine, reduced wear on the screws and earns of the machine, particularly if the cooperating screws or other members of the machine are made of similar materials. The faller bars will also be much lighter in weight than conventional metal faller bars.

Whilst the invention is primarily designed for application to faller bars, as described above, it will be understood that it can equally well be applied to other comblike members that are normally made of metal and have a series of pins projecting therefrom and secured either individually or as pin strip units. For example, the invention can be applied to hackles and gills, French top combs and segments.

Although the metal insert or reinforcement illustrated in FIGURES 4, 5, 6, 7 and 9, is substantially U-shaped in cross-section, it will be appreciated that it may be of any other convenient cross-sectional shape, for example, it may comprise a plain metal strip and the end portions of the strip may be offset relatively to the main portion, and may be shaped according to the shape of the faller bar end portions so as to provide reinforcement as required for the faller bar end portions. In any event, the metal insert may have ribs or corrugations, for example longitudinally disposed ribs or corrugations, to increase the rigidity and resistance to flexing of the faller bar or the like.

Whilst it is preferred that a single metal insert should be embedded in the material of the faller bar, whether it is a plain strip or a corrugated or ribbed strip, there may be two such metal strips each disposed along one side of the butt ends of the pins. In any case whether there is one or two strips, or a U-section strip, it is preferred that the synthetic resinous material should be caused to fill all the spaces between the butt ends of the pins and be- 4 tween the metal insert or inserts and the butt end of the pins.

We claim:

1. A lightweight comb-like member for a textile combing machine comprising a body molded of synthetic resin material and having integral end sections shaped for mounting the member in said machine, a series of pins arranged in a row along an intermediate section of said body disposed between said end sections with their butt ends permanently imbedded within said material and having pointed ends projecting from said body, and a longitudinally extending resilient spring metal reinforcing element permanently imbedded within said body to extend adjacent said butt ends of the pins and having its ends dispose-d and anchored within said body end sections, said element being shaped as a channel with the butt ends of the pins projecting through the open side thereof into the material filling said channel, and said element and said pins being independently incorporated within said body.

2. A lightweight comb-like member for a textile combing machine comprising a body molded of synthetic resin material and having integral end sections shaped for mounting the member in said machine, a series of pins arranged in a row along an intermediate section of said body disposed between said end sections with their butt ends permanently imbedded in said material and having pointed ends projecting out of said body, and a longitudinally extending resilient spring metal reinforcing element permanently imbedded within said body to extend adjacent the butt ends of said pins, said element being shaped as a channel with the butt ends of the pins projecting through the open side thereof into the material filling the channel, and said element and said pins being independently incorporated within said body.

3. A lightweight comb-like member for a textile combing machine comprising a body molded of synthetic resin material and having integral end sections shaped for mounting the member in said machine, a series of pins arranged in a row along an intermediate section of said body disposed between said end sections with their butt ends permanently imbedded within said material and having pointed ends projecting from said body, and a longitudinally extending resilient spring metal reenforcing element permanently imbedded within said body to extend adjacent said butt ends of the pins and having its ends dispose and anchored within said body end sections, said element and said pins being independently incorporated within said body.

4. The member defined in claim 3, wherein said material is nylon reinforced by incorporated glass fibers.

5. The member defined in claim 3, wherein said material contains an incorporated lubricating compound.

6. A lightweight comb-like member for a textile combing machine comprising a body molded of synthetic resin material and having integral end sections shaped for mounting the member in said machine, a series of pins arranged in a row along an intermediate section of said body disposed between said ends sections with their butt ends permanently imbedded in said material and having pointed ends projecting out of said body, and a longitudinally extending resilient spring metal reinforcing element permanently imbedded within said body to extend adjacent the butt ends of said pins, said element and said pins being independently incorporated Within said body.

7. The member defined in claim 6, wherein said element is a spring steel strip.

8. The member defined in claim 6 wherein said element is a channel shaped srtip with its open side receiving the butt ends of said pins, and said element having flattened ends projecting within said integral body end sections. i

9. A lightweight comb-like faller bar for a textile combing machine comprising a body molded in one piece 5 6 of synthetic resin material and having end sections intesaid body and said pins being wholly supported by said gral with said body and shaped for mounting in said body material. machine longitudinally extending resilient spring metal References Cited reenforcmg strip means permanently lmbedded in said body, and a series of pins disposed in a row along the 5 FOREIGN PATENTS section of said body intermediate said end sections, each 735,163 9/1955 England. of said pins having a butt end permanently imbedded in 967,802 8/1964 England.

said material and shaped to anchor therein and having pointed ends projecting out of said body, said element MERVIN STEIN Pr'mary Exammerand said pins being independently incorporated within 10 I, C WADDEY, J E i 

1. A LIGHTWEIGHT COMB-LIKE MEMBER FOR A TEXTILE COMBING MACHINE COMPRISING A BODY MOLDED OF SYNTHETIC RESIN MATERIAL AND HAVING INTEGRAL END SECTIONS SHAPED FOR MOUNTING THE MEMBER IN SAID MACHINE, A SERIES OF PINS ARRANGED IN A ROW ALONG AN INTERMEDIATE SECTION OF SAID BODY DISPOSED BETWEEN SAID END SECTIONS WITH THEIR BUTT ENDS PERMANENTLY IMBEDDED WITHIN SAID MATERIAL AND HAVING POINTED ENDS PROJECTING FROM SAID BODY, AND A LONGITUDINALLY EXTENDING RESILIENT SPRING METAL REINFORCING ELEMENT PERMANENTLY IMBEDDED WITHIN SAID BODY TO EXTEND ADJACENT SAID BUTT ENDS OF THE PINS AND HAVING ITS ENDS DISPOSED AND ANCHORED WITHIN SAID BODY END SECTIONS, SAID ELEMENT BEING SHAPED AS A CHANNEL WITH THE BUTT ENDS OF THE PINS PROJECTING THROUGH THE OPEN SIDE THEREOF INTO THE MATERIAL FILLING SAID CHANNEL, AND SAID ELEMENT AND SAID PINS BEING INDEPENDENTLY INCORPORATED WITHIN SAID BODY. 